CN103595259A - Double-transformer serial-parallel isolated-type soft switching direct-current converter and control method thereof - Google Patents
Double-transformer serial-parallel isolated-type soft switching direct-current converter and control method thereof Download PDFInfo
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Abstract
The invention discloses a double-transformer serial-parallel isolated-type soft switching direct-current converter and a control method thereof, and belongs to the technical field of power electronic converters. The converter is composed of an input source (Uin), a first input voltage-dividing capacitor (Cin1), a second input voltage-dividing capacitor (Cin2), a first switching tube (S1), a second switching tube (S2), a third switching tube (S3), a fourth switching tube (S4), a fifth switching tube (S5), a sixth switching tube (S6), a filtering inductor (Lf), two transformer (T1and T2), a bridging capacitor (Cb), a first diode (D1), a second diode (D2), a third diode (D3), a fourth diode (D4), an output filtering capacitor (Co) and a load (Ro). According to the converter, the control over an output voltage is achieved through the phase-shifting control over the switching tubes, the primary sides of the two transformers of the converter are of a serial structure, the auxiliary sides of the two transformers of the converter are of a parallel structure, the voltage stress and the current stress of the converter are greatly reduced, the converter is particularly suitable for occasions where high-voltage input and low-voltage and high-current output exist, the converter has the capacity for achieving soft switching of all the switching tubes within the whole load range, high-frequency and efficient power conversion can be achieved, the size of the inductor and the sizes of the transformers are effectively reduced, the high-power density is achieved, and the converter is easy to control, high in reliability and easy to obtain.
Description
Technical field
The present invention relates to the series-parallel isolated soft switching DC converter of a kind of dual transformer and control method thereof, belong to converters technical field.
Background technology
Isolated converter is applicable to the application scenario of input and output requirement electrical isolation, in every field such as generation of electricity by new energy, industry, civilian, Aero-Space, has a wide range of applications.
Traditional isolated DC transducer, although such as forward converter, anti exciting converter, push-pull converter, half-bridge converter, full-bridge converter etc. can be realized the power conversion of electrical isolation, but the following problem of ubiquity: the voltage stress of switching device is high, particularly the voltage stress of converter secondary rectifier diode is far above output voltage; The due to voltage spikes of the switching device that transformer leakage inductance causes and concussion, further aggravated switching device stress, reduced reliability and efficiency.In addition, traditional DC converter can not realize the soft switch of switching tube conventionally, has limited the efficiency of converter.Although full-bridge converter is by adopting phase shifting control to realize soft switch under certain loads and input and output voltage condition, but its cost is the conduction loss that has increased converter, the circulation loss that particularly leakage inductance causes, when input voltage reduces, circulation loss will sharply increase, in addition, phase-shifted full-bridge converter also cannot be realized soft switch when underloading.
In tradition isolated converter, its input side switching device minimum voltage stress is generally input voltage, and this has limited it in the more application of high voltage occasion.Connection in series-parallel by a plurality of converters is connected, can solve device voltage, the current stress problems of too of the application scenarios such as high input voltage, High-current output, but its each converter itself is independently, in order to guarantee the normal operation of whole system, need to add and all press the controlling units such as current-sharing, increased control system complexity, reduced reliability.On the other hand, the connection in series-parallel of converter module combination does not reduce the quantity of switching device used in each module, and this also can cause the problems such as system number of devices used is many, volume weight is large.
Summary of the invention
Goal of the invention:
The present invention is directed to the deficiencies in the prior art, the series-parallel isolated soft switching DC converter of a kind of dual transformer and control method thereof are provided.
Technical scheme:
The present invention is by the following technical solutions:
The series-parallel isolated soft switching DC converter of described dual transformer is by input source (U
in), the first input dividing potential drop electric capacity (C
in1), the second input dividing potential drop electric capacity (C
in2), the first switching tube (S
1), second switch pipe (S
2), the 3rd switching tube (S
3), the 4th switching tube (S
4), the 5th switching tube (S
5), the 6th switching tube (S
6), filter inductance (L
f), capacitance (C
b), the first transformer (T
1), the second transformer (T
2), the first diode (D
1), the second diode (D
2), the 3rd diode (D
3), the 4th diode (D
4), output filter capacitor (C
o) and load (R
o) formation, wherein the first transformer (T
1) comprise the first former limit winding (N
p1) and the first secondary winding (N
s1), the second transformer (T
2) comprise the second former limit winding (N
p2) and the second secondary winding (N
s2); Described input source (U
in) positive pole be connected in the first input dividing potential drop electric capacity (C
in1) one end and the first switching tube (S
1) drain electrode, the first switching tube (S
1) source electrode be connected in second switch pipe (S
2) drain electrode and filter inductance (L
f) one end, filter inductance (L
f) the other end be connected in the first transformer (T
1) the first former limit winding (N
p1) Same Name of Ends, the first transformer (T
1) the first former limit winding (N
p1) non-same polarity be connected in the second transformer (T
2) the second former limit winding (N
p2) Same Name of Ends, the second transformer (T
2) the second former limit winding (N
p2) non-same polarity be connected in capacitance (C
b) one end, capacitance (C
b) the other end be connected in the 3rd switching tube (S
3) source electrode and the 4th switching tube (S
4) drain electrode, the 4th switching tube (S
4) source electrode be connected in the second input dividing potential drop electric capacity (C
in2) one end and input source (U
in) negative pole, the second input dividing potential drop electric capacity (C
in2) the other end be connected in the first input dividing potential drop electric capacity (C
in1) the other end, second switch pipe (S
2) source electrode and the 3rd switching tube (S
3) drain electrode; Described the first transformer (T
1) the first secondary winding (N
s1) Same Name of Ends be connected in the 5th switching tube (S
5) drain electrode and the 6th switching tube (S
6) source electrode, the 6th switching tube (S
6) drain electrode be connected in the first diode (D
1) negative electrode, the 3rd diode (D
3) negative electrode, output filter capacitor (C
o) one end and load (R
o) one end, load (R
o) the other end be connected in output filter capacitor (C
o) the other end, the second diode (D
2) anode, the 4th diode (D
4) anode and the 5th switching tube (S
5) source electrode, the second diode (D
2) negative electrode be connected in the first diode (D
1) anode, the first transformer (T
1) the first secondary winding (N
s1) non-same polarity and the second transformer (T
2) the second secondary winding (N
s2) non-same polarity, the second transformer (T
2) the second secondary winding (N
s2) Same Name of Ends be connected in the 3rd diode (D
3) anode and the 4th diode (D
4) negative electrode.
In the series-parallel isolated soft switching DC converter of dual transformer of the present invention, described filter inductance (L
f) can be by the first transformer (T
1) and the second transformer (T
2) leakage inductance replace.
In the series-parallel isolated soft switching DC converter of dual transformer of the present invention, the first switching tube (S
1) and second switch pipe (S
2) complementary conducting, the 3rd switching tube (S
3) and the 4th switching tube (S
4) complementary conducting, the 5th switching tube (S
5) and the 6th switching tube (S
6) complementary conducting, the first switching tube (S
1), second switch pipe (S
2), the 3rd switching tube (S
3), the 4th switching tube (S
4), the 5th switching tube (S
5) and the 6th switching tube (S
6) duty ratio equate, the first switching tube (S
1) and the 4th switching tube (S
4) simultaneously conducting, turn-off second switch pipe (S simultaneously
2) and the 3rd switching tube (S
3) simultaneously conducting, turn-off the first switching tube (S simultaneously
1) open and be constantly not later than the 6th switching tube (S
6) open constantly, the 3rd switching tube (S
3) open and be constantly not later than the 5th switching tube (S
5) open constantly, by regulating the first switching tube (S
1) and the 6th switching tube (S
6) phase shifting angle between opening constantly realizes the control of output voltage.
The present invention has following technique effect:
(1) voltage stress of the former limit of converter switching device be input voltage half, the voltage stress of secondary-side switch device equals output voltage, device voltage stress is low;
(2) two transformer primary side windings in series, secondary winding parallel, two transformer current can naturally sharing current;
(3) series parallel structure makes its applicable high input voltage, low-voltage, high-current output application scenario;
(4) in converter, all switching devices can be realized soft switch in full-load range, and conversion efficiency is high;
(5) leakage inductance of transformer is utilized effectively, the circulation or the due to voltage spikes problem that do not exist leakage inductance to cause;
(6) topological structure is succinct, control is simple.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit theory diagrams of the series-parallel isolated soft switching DC converter of dual transformer of the present invention;
Accompanying drawing 2 is the series-parallel isolated soft switching DC converter of dual transformer of the present invention main oscillograms under continuous current mode mode of operation;
Accompanying drawing 3～accompanying drawing 7 is equivalent circuit diagrams of the series-parallel isolated soft switching DC converter of dual transformer of the present invention each switch mode under continuous current mode mode of operation;
Accompanying drawing 8 is the series-parallel isolated soft switching DC converter of dual transformer of the present invention main oscillograms under discontinuous current mode mode of operation;
Accompanying drawing 9～accompanying drawing 13 is equivalent circuit diagrams of the series-parallel isolated soft switching DC converter of dual transformer of the present invention each switch mode under discontinuous current mode mode of operation;
Designation in above accompanying drawing: U
infor input source; L
ffor filter inductance; T
1and T
2be respectively the first and second transformers; N
p1and N
s1be respectively transformer (T
1) former limit winding and secondary winding; N
p2and N
s2be respectively transformer (T
2) former limit winding and secondary winding; C
in1and C
in2be respectively the first and second input dividing potential drop electric capacity; C
bfor capacitance; S
1, S
2, S
3, S
4, S
5and S
6be respectively the first, second, third, fourth, the 5th and the 6th switching tube; D
1, D
2, D
3and D
4be respectively the first, second, third and the 4th diode; C
ofor output filter capacitor; R
ofor load; U
ofor output voltage; u
dS1and u
dS6be respectively the first switching tube (S
1) and the 6th switching tube (S
6) drain electrode and the voltage between source electrode; u
nS1for transformer (T
1) secondary winding (N
s1) voltage between Same Name of Ends and non-same polarity; i
lffor filter inductance (L
f) electric current; i
s1, i
s2, i
s3and i
s4be respectively the electric current that flows into the first, second, third and the 4th switching tube drain electrode; T, t
0, t
1, t
2, t
3, t
4and t
5for the time.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is elaborated.
As shown in Figure 1, the series-parallel isolated soft switching DC converter of dual transformer of the present invention is by input source (U
in), the first input dividing potential drop electric capacity (C
in1), the second input dividing potential drop electric capacity (C
in2), the first switching tube (S
1), second switch pipe (S
2), the 3rd switching tube (S
3), the 4th switching tube (S
4), the 5th switching tube (S
5), the 6th switching tube (S
6), filter inductance (L
f), capacitance (C
b), the first transformer (T
1), the second transformer (T
2), the first diode (D
1), the second diode (D
2), the 3rd diode (D
3), the 4th diode (D
4), output filter capacitor (C
o) and load (R
o) formation, wherein the first transformer (T
1) comprise the first former limit winding (N
p1) and the first secondary winding (N
s1), the second transformer (T
2) comprise the second former limit winding (N
p2) and the second secondary winding (N
s2); Described input source (U
in) positive pole be connected in the first input dividing potential drop electric capacity (C
in1) one end and the first switching tube (S
1) drain electrode, the first switching tube (S
1) source electrode be connected in second switch pipe (S
2) drain electrode and filter inductance (L
f) one end, filter inductance (L
f) the other end be connected in the first transformer (T
1) the first former limit winding (N
p1) Same Name of Ends, the first transformer (T
1) the first former limit winding (N
p1) non-same polarity be connected in the second transformer (T
2) the second former limit winding (N
p2) Same Name of Ends, the second transformer (T
2) the second former limit winding (N
p2) non-same polarity be connected in capacitance (C
b) one end, capacitance (C
b) the other end be connected in the 3rd switching tube (S
3) source electrode and the 4th switching tube (S
4) drain electrode, the 4th switching tube (S
4) source electrode be connected in the second input dividing potential drop electric capacity (C
in2) one end and input source (U
in) negative pole, the second input dividing potential drop electric capacity (C
in2) the other end be connected in the first input dividing potential drop electric capacity (C
in1) the other end, second switch pipe (S
2) source electrode and the 3rd switching tube (S
3) drain electrode; Described the first transformer (T
1) the first secondary winding (N
s1) Same Name of Ends be connected in the 5th switching tube (S
5) drain electrode and the 6th switching tube (S
6) source electrode, the 6th switching tube (S
6) drain electrode be connected in the first diode (D
1) negative electrode, the 3rd diode (D
3) negative electrode, output filter capacitor (C
o) one end and load (R
o) one end, load (R
o) the other end be connected in output filter capacitor (C
o) the other end, the second diode (D
2) anode, the 4th diode (D
4) anode and the 5th switching tube (S
5) source electrode, the second diode (D
2) negative electrode be connected in the first diode (D
1) anode, the first transformer (T
1) the first secondary winding (N
s1) non-same polarity and the second transformer (T
2) the second secondary winding (N
s2) non-same polarity, the second transformer (T
2) the second secondary winding (N
s2) Same Name of Ends be connected in the 3rd diode (D
3) anode and the 4th diode (D
4) negative electrode.
In the specific implementation, filter inductance (L
f) can be in whole or in part by two transformer (T
1, T
2) leakage inductance replace, this leakage inductance that shows transformer will be utilized effectively, and leakage inductance has been used as after Energy Transfer inductance, no longer there is due to voltage spikes or the loss problem that in isolated converter, leakage inductance causes of ganging up in this converter.
The series-parallel isolated soft switching DC converter of dual transformer of the present invention is taked following control method in the specific implementation, the first switching tube (S
1) and second switch pipe (S
2) complementary conducting, the 3rd switching tube (S
3) and the 4th switching tube (S
4) complementary conducting, the 5th switching tube (S
5) and the 6th switching tube (S
6) complementary conducting, the first switching tube (S
1), second switch pipe (S
2), the 3rd switching tube (S
3), the 4th switching tube (S
4), the 5th switching tube (S
5) and the 6th switching tube (S
6) duty ratio equate, the first switching tube (S
1) and the 4th switching tube (S
4) simultaneously conducting, turn-off second switch pipe (S simultaneously
2) and the 3rd switching tube (S
3) simultaneously conducting, turn-off the first switching tube (S simultaneously
1) open and be constantly not later than the 6th switching tube (S
6) open constantly, the 3rd switching tube (S
3) open and be constantly not later than the 5th switching tube (S
5) open constantly, by regulating the first switching tube (S
1) and the 6th switching tube (S
6) phase shifting angle between opening constantly realizes the control of output voltage.
In the specific implementation, the first switching tube (S
1) and second switch pipe (S
2) switching signal between rational Dead Time must be set to realize the first switching tube (S
1) and second switch pipe (S
2) soft switch, the 3rd switching tube (S
3) and the 4th switching tube (S
4) switching signal between rational Dead Time must be set to realize the 3rd switching tube (S
3) and the 4th switching tube (S
4) soft switch, the 5th switching tube (S
5) and the 6th switching tube (S
6) switching signal between also need to arrange suitable Dead Time.
In the specific implementation, all switching tubes should be selected the semiconductor switch device with parasitic body diode, such as mos field effect transistor etc.If selected switching tube, should be at its drain electrode and source electrode two ends anti-paralleled diode without parasitic body diode.
From the circuit structure of the series-parallel isolated soft switching DC converter of dual transformer of the present invention shown in accompanying drawing 1, can find out intuitively, the switching device on this former limit of converter is all transfused to dividing potential drop capacitor-clamped, be that its voltage stress only equals half of input voltage, and the switching device of converter secondary is all directly output voltage clamping, also be that its voltage stress just equals output voltage, there is not due to voltage spikes problem in all switching devices of former limit and secondary, the voltage stress of switching device is low.
Suppose that all inductance, electric capacity, switching tube and diode are all desirable device, ignore the voltage ripple on all electric capacity.According to inductance (L
f) operating state, the series-parallel isolated soft switching DC converter of dual transformer of the present invention (hereinafter to be referred as converter) can work in continuous current mode pattern or discontinous mode.Distinguish the operation principle of analytic transformation device under two kinds of mode of operations below.
When power output is larger, converter is usually operated at continuous current mode pattern.Accompanying drawing 2 is converter groundwork waveforms under continuous current mode pattern.Under this pattern, in half switch periods, have five kinds of switch mode.
Switch mode 1[t
0, t
1]: t
0constantly, switching tube S
2, S
3and S
5conducting, diode D
1and D
4conducting, filter inductance L
fcurrent i
lffor negative value, input source U
inthrough filter inductance L
fto load through-put power; t
0constantly, S
2, S
3turn-off filter inductance L
fcommutate the current to S
1and S
4body diode in, switching tube S
1and S
4voltage reduce to 0, therefore, S
1and S
4possessed the condition that no-voltage is opened, meanwhile, filter inductance L
fcurrent i
lfeffect lower linear at input and output voltage reduces, and this mode equivalent electric circuit as shown in Figure 3.
Switch mode 2[t
1, t
2]: t
1constantly, switching tube S
1and S
4no-voltage is open-minded, filter inductance L
felectric current continues to reduce, until t
2moment i
lfbe reduced to 0, diode D
1and D
4naturally turn-off, this mode equivalent electric circuit as shown in Figure 4.
Switch mode 3[t
2, t
3]: t
2constantly start filter inductance L
fcurrent i
lfthe linearity of starting from scratch increases, diode D
2and D
3the increase of starting from scratch of conducting and electric current, input source is to load through-put power, and this mode finishes, and this mode equivalent electric circuit is as shown in Figure 5.It should be noted that the lasting time of this mode is longer, the peak value of inductive current is larger, and converter can be larger to the power of load transmission, is also that converter output voltage or power output were directly proportional to the duration of this mode.
Switch mode 4[t
3, t
4]: t
3constantly, switching tube S
5turn-off, transformer secondary current commutates to switching tube S
6body diode in, switching tube S
6drain-source voltage reduce to zero, be S
6no-voltage open the condition created, this mode equivalent electric circuit is as shown in Figure 6.
Switch mode 5[t4, t5]: t
4constantly, S
6no-voltage is open-minded, and input source is through filter inductance L
fto load through-put power, this mode equivalent electric circuit as shown in Figure 7 with two transformers.
T
5constantly, second switch periods starts, and the course of work is similar, no longer repeated description.
The course of work of summing up under continuous current mode pattern is known, under continuous current mode pattern, it is open-minded that all switching tubes can both be realized no-voltage, the electric current of two diodes is all that nature is reduced to 0, natural in 0 increase, therefore there is not diode reverse recovery problem, therefore, all switching devices are all soft switch working states.In addition, under continuous current mode pattern, under all switch mode, input source is all to load through-put power, and the continuity that this can proof load side electric current, is conducive to reduce output voltage and current pulsation.
When power output is lower, converter is usually operated at discontinous mode.Accompanying drawing 8 is converter groundwork waveforms under discontinous mode.Under this pattern, in half switch periods, have five kinds of switch mode.
Switch mode 1[t
0, t
1]: t
0constantly, switching tube S
2, S
3and S
5conducting, but due to inductance L
fcurrent i
lfreduced to 0, the electric current that flows through all switching tubes is all 0, and all diodes of secondary are all in off state, although switching tube S
5conducting, but no current flows through.T
0constantly, S
2and S
3turn-off inductance L
felectric current still maintains 0 state, and this modal transformation device equivalent electric circuit as shown in Figure 9.
Switch mode 2[t
1, t
2]: t
1constantly, switching tube S
1and S
4zero current turning-on, inductance L
felectric current is since 0 linear increasing, switching tube S
1and S
4and S
5electric current all from zero, increase gradually, diode D
2and D
3nature conducting, its electric current is also the increase of starting from scratch, this mode equivalent electric circuit is as shown in Figure 10.
Switch mode 3[t
2, t
3]: t
2constantly, switching tube S
5turn-off, transformer secondary current commutates to switching tube S
6body diode in, switching tube S
6drain-source voltage reduce to zero, be S
6no-voltage open the condition created, this mode equivalent electric circuit is as shown in Figure 11.
Switch mode 4[t
3, t
4]: t
3constantly, switching tube S
6no-voltage is open-minded, and input source is through filter inductance L
fto load through-put power, inductive current linearity reduces with two transformers, and this mode equivalent electric circuit as shown in Figure 12.
Switch mode 5[t
4, t
5]: t
4constantly, inductance L
felectric current is reduced to 0 naturally, diode D
2and D
3naturally turn-off, inactivity transmission between the former secondary of this mode, this mode equivalent electric circuit is as shown in Figure 13.
T
5constantly, second switch periods starts, and the course of work is similar, no longer repeated description.
The course of work of summing up under discontinous mode is known, under discontinous mode, four switching tubes on the former limit of converter can both be realized zero current turning-on naturally, it is open-minded that two switching tubes of secondary can both be realized no-voltage naturally, the electric current of all diodes is all that nature is reduced to 0, natural in 0 increase, therefore do not have diode reverse recovery problem, therefore, all switching devices are all also soft switch working states.
Claims (3)
1. the series-parallel isolated soft switching DC converter of dual transformer, is characterized in that:
The series-parallel isolated soft switching DC converter of described dual transformer is by input source (U
in), the first input dividing potential drop electric capacity (C
in1), the second input dividing potential drop electric capacity (C
in2), the first switching tube (S
1), second switch pipe (S
2), the 3rd switching tube (S
3), the 4th switching tube (S
4), the 5th switching tube (S
5), the 6th switching tube (S
6), filter inductance (L
f), capacitance (C
b), the first transformer (T
1), the second transformer (T
2), the first diode (D
1), the second diode (D
2), the 3rd diode (D
3), the 4th diode (D
4), output filter capacitor (C
o) and load (R
o) formation, wherein the first transformer (T
1) comprise the first former limit winding (N
p1) and the first secondary winding (N
s1), the second transformer (T
2) comprise the second former limit winding (N
p2) and the second secondary winding (N
s2);
Described input source (U
in) positive pole be connected in the first input dividing potential drop electric capacity (C
in1) one end and the first switching tube (S
1) drain electrode, the first switching tube (S
1) source electrode be connected in second switch pipe (S
2) drain electrode and filter inductance (L
f) one end, filter inductance (L
f) the other end be connected in the first transformer (T
1) the first former limit winding (N
p1) Same Name of Ends, the first transformer (T
1) the first former limit winding (N
p1) non-same polarity be connected in the second transformer (T
2) the second former limit winding (N
p2) Same Name of Ends, the second transformer (T
2) the second former limit winding (N
p2) non-same polarity be connected in capacitance (C
b) one end, capacitance (C
b) the other end be connected in the 3rd switching tube (S
3) source electrode and the 4th switching tube (S
4) drain electrode, the 4th switching tube (S
4) source electrode be connected in the second input dividing potential drop electric capacity (C
in2) one end and input source (U
in) negative pole, the second input dividing potential drop electric capacity (C
in2) the other end be connected in the first input dividing potential drop electric capacity (C
in1) the other end, second switch pipe (S
2) source electrode and the 3rd switching tube (S
3) drain electrode;
Described the first transformer (T
1) the first secondary winding (N
s1) Same Name of Ends be connected in the 5th switching tube (S
5) drain electrode and the 6th switching tube (S
6) source electrode, the 6th switching tube (S
6) drain electrode be connected in the first diode (D
1) negative electrode, the 3rd diode (D
3) negative electrode, output filter capacitor (C
o) one end and load (R
o) one end, load (R
o) the other end be connected in output filter capacitor (C
o) the other end, the second diode (D
2) anode, the 4th diode (D
4) anode and the 5th switching tube (S
5) source electrode, the second diode (D
2) negative electrode be connected in the first diode (D
1) anode, the first transformer (T
1) the first secondary winding (N
s1) non-same polarity and the second transformer (T
2) the second secondary winding (N
s2) non-same polarity, the second transformer (T
2) the second secondary winding (N
s2) Same Name of Ends be connected in the 3rd diode (D
3) anode and the 4th diode (D
4) negative electrode.
2. the series-parallel isolated soft switching DC converter of the dual transformer based on claim 1, is characterized in that: described filter inductance (L
f) can be by the first transformer (T
1) and the second transformer (T
2) leakage inductance replace.
3. the control method based on the series-parallel isolated soft switching DC converter of dual transformer claimed in claim 1, is characterized in that:
Described the first switching tube (S
1) and second switch pipe (S
2) complementary conducting, the 3rd switching tube (S
3) and the 4th switching tube (S
4) complementary conducting, the 5th switching tube (S
5) and the 6th switching tube (S
6) complementary conducting, the first switching tube (S
1), second switch pipe (S
2), the 3rd switching tube (S
3), the 4th switching tube (S
4), the 5th switching tube (S
5) and the 6th switching tube (S
6) duty ratio equate, the first switching tube (S
1) and the 4th switching tube (S
4) simultaneously conducting, turn-off second switch pipe (S simultaneously
2) and the 3rd switching tube (S
3) simultaneously conducting, turn-off the first switching tube (S simultaneously
1) open and be constantly not later than the 6th switching tube (S
6) open constantly, the 3rd switching tube (S
3) open and be constantly not later than the 5th switching tube (S
5) open constantly, by regulating the first switching tube (S
1) and the 6th switching tube (S
6) phase shifting angle between opening constantly realizes the control of output voltage.
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| CN201310637120.8A CN103595259B (en) | 2013-11-28 | 2013-11-28 | Dual transformer connection in series-parallel isolation Sofe Switch DC converter and control method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105356755A (en) * | 2015-11-05 | 2016-02-24 | 刘文明 | Variable turn ratio output DC-DC converter |
| CN105743353A (en) * | 2016-04-22 | 2016-07-06 | 西安交通大学 | DC-DC conversion circuit, control method thereof and solid-state transformer |
| CN107493015A (en) * | 2017-09-14 | 2017-12-19 | 北京理工大学 | A kind of two-way DC DC converters and its Poewr control method based on dual transformer structure |
| US10224827B1 (en) | 2018-02-15 | 2019-03-05 | Futurewei Technologies, Inc. | Power converter with wide DC voltage range |
| CN109861543A (en) * | 2019-01-28 | 2019-06-07 | 浙江大学 | A kind of wide crisscross parallel type LCLC controlled resonant converter for loading wide gain |
| CN111490683A (en) * | 2020-04-20 | 2020-08-04 | 北京理工大学 | Trajectory control method for double-transformer series resonance double-active bridge DC-DC converter topology |
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| US11387742B2 (en) | 2019-09-09 | 2022-07-12 | Sea Sonic Electronics Co., Ltd. | Full-bridge resonant conversion circuit |
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| CN1286521A (en) * | 2000-10-19 | 2001-03-07 | 南京航空航天大学 | Three-level DC converter of zero-voltage switch with clamping diode |
| CN102611310A (en) * | 2012-03-09 | 2012-07-25 | 南京航空航天大学 | Magnetic integrated self-driving current-double rectification half-bridge three-level direct-current converter |
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| CN1286521A (en) * | 2000-10-19 | 2001-03-07 | 南京航空航天大学 | Three-level DC converter of zero-voltage switch with clamping diode |
| CN102611310A (en) * | 2012-03-09 | 2012-07-25 | 南京航空航天大学 | Magnetic integrated self-driving current-double rectification half-bridge three-level direct-current converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356755A (en) * | 2015-11-05 | 2016-02-24 | 刘文明 | Variable turn ratio output DC-DC converter |
| CN105743353A (en) * | 2016-04-22 | 2016-07-06 | 西安交通大学 | DC-DC conversion circuit, control method thereof and solid-state transformer |
| CN105743353B (en) * | 2016-04-22 | 2018-10-30 | 西安交通大学 | A kind of DC-DC conversion circuit, its control method and solid-state transformer |
| CN107493015A (en) * | 2017-09-14 | 2017-12-19 | 北京理工大学 | A kind of two-way DC DC converters and its Poewr control method based on dual transformer structure |
| US10224827B1 (en) | 2018-02-15 | 2019-03-05 | Futurewei Technologies, Inc. | Power converter with wide DC voltage range |
| CN109861543A (en) * | 2019-01-28 | 2019-06-07 | 浙江大学 | A kind of wide crisscross parallel type LCLC controlled resonant converter for loading wide gain |
| TWI745729B (en) * | 2019-08-02 | 2021-11-11 | 海韻電子工業股份有限公司 | Full-bridge resonant conversion circuit |
| US11387742B2 (en) | 2019-09-09 | 2022-07-12 | Sea Sonic Electronics Co., Ltd. | Full-bridge resonant conversion circuit |
| CN111490683B (en) * | 2020-04-20 | 2021-03-05 | 北京理工大学 | Trajectory control method for double-transformer series resonance double-active bridge DC-DC converter topology |
| CN111490683A (en) * | 2020-04-20 | 2020-08-04 | 北京理工大学 | Trajectory control method for double-transformer series resonance double-active bridge DC-DC converter topology |
| CN112769339A (en) * | 2021-01-11 | 2021-05-07 | 电子科技大学 | Series-parallel connection double-active bridge converter and modulation method |
| CN112769339B (en) * | 2021-01-11 | 2022-04-05 | 电子科技大学 | Series-parallel connection double-active bridge converter and modulation method |
| CN114448261A (en) * | 2022-02-10 | 2022-05-06 | 上海交通大学 | Dual-input semi-active bridge converter with port short-circuit fault-tolerant operation capability |
| CN114448261B (en) * | 2022-02-10 | 2024-06-07 | 上海交通大学 | Dual input semi-active bridge converter with port short circuit fault tolerant operation capability |
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